34ae59b7acc09c2e82625640cae82c5158b649db1418ddbaa24138b51f1722c5

Analysis

max time kernel
136s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 16:14

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General

Target

LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_ReflectiveDll_DllMain.dll
Size

107KB
MD5

660679f8d44100cd240add9862598d66
SHA1

afca2fd0af09265e099e8cf5b898ea45f01f288a
SHA256

6667b29705a3c882d536589dc9d7193725ecdbc42c8bb0cc60f3c9d6d0240275
SHA512

d347ed75a08678af1eb449230f437d6f0fb3da6f98a6f7d36eaf73c7cd1399ec9712b940b370a92fa9b8d6a2ece5c607e86ecbfa12cc6cda3df85d66475091dd
SSDEEP

3072:n9bfmBYtGb2kZlBmLmmnFPNeSDkDqS4AJ:n9ptGakZlsLXFISDzAJ

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	466F.tmp

Deletes itself 1 IoCs

pid	Process
1624	466F.tmp

Executes dropped EXE 1 IoCs

pid	Process
1624	466F.tmp

Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

pid	Process
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
1624	466F.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.HHuYRxB06	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.HHuYRxB06\ = "HHuYRxB06"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06\DefaultIcon	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06\DefaultIcon\ = "C:\\ProgramData\\HHuYRxB06.ico"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe
4188	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp
1624	466F.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeDebugPrivilege	4188	rundll32.exe
Token: 36	4188	rundll32.exe
Token: SeImpersonatePrivilege	4188	rundll32.exe
Token: SeIncBasePriorityPrivilege	4188	rundll32.exe
Token: SeIncreaseQuotaPrivilege	4188	rundll32.exe
Token: 33	4188	rundll32.exe
Token: SeManageVolumePrivilege	4188	rundll32.exe
Token: SeProfSingleProcessPrivilege	4188	rundll32.exe
Token: SeRestorePrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSystemProfilePrivilege	4188	rundll32.exe
Token: SeTakeOwnershipPrivilege	4188	rundll32.exe
Token: SeShutdownPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeDebugPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeBackupPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe
Token: SeSecurityPrivilege	4188	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 4188	3516	rundll32.exe	87
PID 3516 wrote to memory of 4188	3516	rundll32.exe	87
PID 3516 wrote to memory of 4188	3516	rundll32.exe	87
PID 4188 wrote to memory of 1624	4188	rundll32.exe	92
PID 4188 wrote to memory of 1624	4188	rundll32.exe	92
PID 4188 wrote to memory of 1624	4188	rundll32.exe	92
PID 4188 wrote to memory of 1624	4188	rundll32.exe	92
PID 1624 wrote to memory of 2824	1624	466F.tmp	93
PID 1624 wrote to memory of 2824	1624	466F.tmp	93
PID 1624 wrote to memory of 2824	1624	466F.tmp	93

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\LB3_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\LB3_ReflectiveDll_DllMain.dll,#1
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\ProgramData\466F.tmp
    "C:\ProgramData\466F.tmp"
    3⤵
    - Checks computer location settings
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:1624
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\466F.tmp >> NUL
      4⤵
      PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\466F.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\DDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Filesize
107KB

MD5
449a71aee59128be3603a4af131fe36b

SHA1
93a8dd51035244594069483d9d3b73c6ced71bee

SHA256
a130894d4f1171d4beb7f963e72e92029cd4c3b709e50484f805b82ce0b70877

SHA512
a83a57d210bf8820be1b7a39c7952fe90a05184785015f26d0a602ea351e9b68414402fc2b9f89ee31a9166192cbc7356657f00dfd48a26e625ce237c0c3f949

Download Submit
memory/1624-40-0x000000007FE20000-0x000000007FE21000-memory.dmp

Filesize
4KB

Download
memory/1624-11-0x000000007FE40000-0x000000007FE41000-memory.dmp

Filesize
4KB

Download
memory/1624-43-0x000000007FE00000-0x000000007FE01000-memory.dmp

Filesize
4KB

Download
memory/1624-42-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

Filesize
4KB

Download
memory/1624-41-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

Filesize
4KB

Download
memory/4188-0-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/4188-1-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/4188-2-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/4188-5-0x0000000003360000-0x0000000003370000-memory.dmp

Filesize
64KB

Download